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Liu Y, Wang D, Wang Q, Kang W. Polymerizable Nonionic Perfluorinated Photoacid Generators for High-Resolution Lithography. SMALL METHODS 2024; 8:e2400112. [PMID: 39308305 DOI: 10.1002/smtd.202400112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 09/06/2024] [Indexed: 12/28/2024]
Abstract
Advanced photoresists must satisfy stringent sensitivity requirements while maintaining the ability to print ever-shrinking critical dimensions. However, the unavoidable acid diffusion associated with chemically amplified photoresists has led to a trade-off between resolution, line-edge roughness, and sensitivity, which presents a significant challenge for high-resolution lithography. To address this issue, a novel class of alkene-functionalized nonionic perfluorinated photoacid generators (PAGs) is developed. These fluorine-rich compounds significantly enhance the photochemical reactivity due to the introduction of abundant F-elements, thereby improving sensitivity. Upon irradiation by ultraviolet light or electrons, they generate long-chain perfluorinated sulfonic acids with large sizes and minimal diffusion ranges, effectively suppressing acid diffusion. Furthermore, by employing these polymerizable PAG monomers, PAG-bound polymers are synthesized that are likely to achieve higher resolution by minimizing acid diffusion. Lithography performance demonstrated patterning of sub-45 nm lines at an electron beam dose of 29 µC cm-2. Overall, the developed perfluorinated PAGs and PAG-bound polymer photoresists are promising candidates for achieving high-sensitivity and high-resolution nano-patterning.
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Affiliation(s)
- Yue Liu
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, Shandong, 250100, China
| | - Dong Wang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, Shandong, 250100, China
| | - Qianqian Wang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, Shandong, 250100, China
| | - Wenbing Kang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, Shandong, 250100, China
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2
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Zhang L, Li L, Chen Y, Pi J, Liu R, Zhu Y. Recent Advances and Challenges in Long Wavelength Sensitive Cationic Photoinitiating Systems. Polymers (Basel) 2023; 15:2524. [PMID: 37299323 PMCID: PMC10255707 DOI: 10.3390/polym15112524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/06/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
With the advantages offered by cationic photopolymerization (CP) such as broad wavelength activation, tolerance to oxygen, low shrinkage and the possibility of "dark cure", it has attracted extensive attention in photoresist, deep curing and other fields in recent years. The applied photoinitiating systems (PIS) play a crucial role as they can affect the speed and type of the polymerization and properties of the materials formed. In the past few decades, much effort has been invested into developing cationic photoinitiating systems (CPISs) that can be activated at long wavelengths and overcome technical problems and challenges faced. In this article, the latest developments in the long wavelength sensitive CPIS under ultraviolet (UV)/visible light-emitting diodes (LED) lights are reviewed. The objective is, furthermore, to show differences as well as parallels between different PIS and future perspectives.
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Affiliation(s)
- Liping Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
| | - Lun Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Ying Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Junyi Pi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Ren Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
| | - Yi Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
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3
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Kaya K, Kiliclar HC, Yagci Y. Photochemically generated ionic species for cationic and step-growth polymerizations. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.112000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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4
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Photoinitiator of photosensitizer? Dual behaviour of m-terphenyls in photopolymerization processes. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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5
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Li L, Wan M, Li Z, Luo Y, Wu S, Liu X, Yagci Y. Coumarinacyl Anilinium Salt: A Versatile Visible and NIR Photoinitiator for Cationic and Step-Growth Polymerizations. ACS Macro Lett 2023; 12:263-268. [PMID: 36734851 DOI: 10.1021/acsmacrolett.2c00675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A coumarinacyl anilinium (CAA) salt, facilely synthesized via a one-pot reaction, is shown to be a versatile visible and NIR photoinitiator for cationic and step-growth polymerizations. CAA salt exhibits superior photoinitiation performance as compared to commercial iodonium salt in cationic polymerization. Upon visible-light irradiation, this salt undergoes hemolytic and heterolytic cleavage and subsequent electron transfer and hydrogen abstraction reactions, forming reactive species capable of initiating cationic polymerization of epoxides and vinyl monomers. After a short irradiation period, polymerization also proceeds in the dark due to the non-nucleophilic nature of the counteranion. NIR-induced polymerizations were successfully conducted based on upconversion photochemistry. CAA salt can also initiate step-growth polymerization of N-ethyl carbazole (NEC) by oxidation of the monomer by the photochemically formed anilium radical cations. Subsequent proton release and radical coupling reactions essentially yield polycarbazole. CAA salt, featuring straightforward synthesis and long-wavelength sensitivity as well as versatile photoinitiating performance, has great potential in various applications.
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Affiliation(s)
- Longji Li
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China
| | - Mengdi Wan
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China
| | - Zhiquan Li
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China.,Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong Province 522000, China
| | - Yicong Luo
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China
| | - Shufang Wu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China.,Guangdong Shenzhan Industry Co., Ltd, 522000 Jieyang, Guangdong, China
| | - Xiaoxuan Liu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China.,Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong Province 522000, China
| | - Yusuf Yagci
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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6
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High-Performance Photoinitiating Systems for LED-Induced Photopolymerization. Polymers (Basel) 2023; 15:polym15020342. [PMID: 36679223 PMCID: PMC9860695 DOI: 10.3390/polym15020342] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/29/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Currently, increasing attention has been focused on light-emitting diodes (LEDs)-induced photopolymerization. The common LEDs (e.g., LED at 365 nm and LED at 405 nm) possess narrow emission bands. Due to their light absorption properties, most commercial photoinitiators are sensitive to UV light and cannot be optimally activated under visible LED irradiation. Although many photoinitiators have been designed for LED-induced free radical polymerization and cationic polymerization, there is still the issue of the mating between photoinitiators and LEDs. Therefore, the development of novel photoinitiators, which could be applied under LED irradiation, is significant. Many photoinitiating systems have been reported in the past decade. In this review, some recently developed photoinitiators used in LED-induced photopolymerization, mainly in the past 5 years, are summarized and categorized as Type Ⅰ photoinitiators, Type Ⅱ photoinitiators, and dye-based photoinitiating systems. In addition, their light absorption properties and photoinitiation efficiencies are discussed.
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7
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Szymaszek P, Tomal W, Świergosz T, Kamińska-Borek I, Popielarz R, Ortyl J. Review of quantitative and qualitative methods for monitoring photopolymerization reactions. Polym Chem 2023. [DOI: 10.1039/d2py01538b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Authomatic in-situ monitoring and characterization of photopolymerization.
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8
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Influence of a non-reactive additive on the photocuring and 3D-VAT printing processes of PEGDA: complementary studies. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Yang Z, Chen J, Liao S. Monophosphoniums as Effective Photoredox Organocatalysts for Visible Light-Regulated Cationic RAFT Polymerization. ACS Macro Lett 2022; 11:1073-1078. [PMID: 35984378 DOI: 10.1021/acsmacrolett.2c00418] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Visible light-regulated metal-free polymerizations have attracted considerable attention for macromolecular syntheses in recent years. However, few organic photocatalysts show high efficiency and strict photocontrol in cationic polymerizations. Herein, we introduce monophosphonium-doped polycyclic arenes as an organic photocatalyst, which features the high tunability, broad redox window, long excited state lifetime, and excellent temporal control in the cationic reversible addition-fragmentation chain transfer polymerization of vinyl ethers. A correlation of the catalytic performance and the photophysical and electrochemical properties of photocatalysts is also discussed.
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Affiliation(s)
- Zan Yang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jianxu Chen
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China.,Beijing National Laboratory for Molecular Sciences, Beijing 100190, China
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10
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11
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12
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Ma Y, Kottisch V, McLoughlin EA, Rouse ZW, Supej MJ, Baker SP, Fors BP. Photoswitching Cationic and Radical Polymerizations: Spatiotemporal Control of Thermoset Properties. J Am Chem Soc 2021; 143:21200-21205. [PMID: 34878283 DOI: 10.1021/jacs.1c09523] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The ability to fabricate polymeric materials with spatially controlled physical properties has been a challenge in thermoset manufacturing. To address this challenge, this work takes advantage of a photoswitchable polymerization that selectively incorporates different monomers at a growing chain by converting from cationic to radical polymerizations through modulation of the wavelength of irradiation. By regulating the dosage and wavelength of light applied to the system, the mechanical properties of the crosslinked material can be temporally and spatially tuned. Furthermore, photopatterning can be achieved both on the macroscale and the microscale, enabling precise spatial control of crosslink density that results in high-resolution control over mechanical properties.
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Affiliation(s)
- Yuting Ma
- Department of Chemistry, Cornell University, Ithaca, New York 14853, United States
| | - Veronika Kottisch
- Department of Chemistry, Cornell University, Ithaca, New York 14853, United States
| | | | - Zachary W Rouse
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Michael J Supej
- Department of Chemistry, Cornell University, Ithaca, New York 14853, United States
| | - Shefford P Baker
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Brett P Fors
- Department of Chemistry, Cornell University, Ithaca, New York 14853, United States
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13
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Petko F, Galek M, Hola E, Popielarz R, Ortyl J. One-Component Cationic Photoinitiators from Tunable Benzylidene Scaffolds for 3D Printing Applications. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Filip Petko
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Mariusz Galek
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
| | - Emilia Hola
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Roman Popielarz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Joanna Ortyl
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
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14
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Pyszka I, Kucybała Z, Jędrzejewska B. Effective Singlet Oxygen Sensitizers Based on the Phenazine Skeleton as Efficient Light Absorbers in Dye Photoinitiating Systems for Radical Polymerization of Acrylates. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3085. [PMID: 34200054 PMCID: PMC8200244 DOI: 10.3390/ma14113085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 12/15/2022]
Abstract
A series of dyes based on the phenazine skeleton were synthesized. They differed in the number of conjugated double bonds, the arrangement of aromatic rings (linear and/or angular system), as well as the number and position of nitrogen atoms in the molecule. These compounds were investigated as potential singlet oxygen sensitizers and visible light absorbers in dye photoinitiating systems for radical polymerization. The quantum yield of the singlet oxygen formation was determined by the comparative method based on the 1H NMR spectra recorded for the tested dyes in the presence of 2,3-diphenyl-p-dioxene before and after irradiation. The quantum yield of the triplet state formation was estimated based on the transient absorption spectra recorded using the nanosecond flash photolysis technique. The effectiveness of the dye photoinitiating system was characterized by the initial rate of trimethylolpropane triacrylate (TMPTA) polymerization. In the investigated photoinitiating systems, the sensitizer was an electron acceptor, whereas the co-initiator was an electron donor. The effectiveness of TMPTA photoinitiated polymerization clearly depended on the arrangement of aromatic rings and the number of nitrogen atoms in the modified phenazine structure as well as the quantum yield of the triplet state formation of the photosensitizer in the visible light region.
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Affiliation(s)
- Ilona Pyszka
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 85-326 Bydgoszcz, Poland;
| | | | - Beata Jędrzejewska
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 85-326 Bydgoszcz, Poland;
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15
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Peng X, Yao M, Xiao P. Newly Synthesized Chromophore‐linked Iodonium Salts as Photoinitiators of Free Radical Photopolymerization. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- X. Peng
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - M. Yao
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - P. Xiao
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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16
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Abstract
3D printing (also called "additive manufacturing" or "rapid prototyping") is able to translate computer-aided and designed virtual 3D models into 3D tangible constructs/objects through a layer-by-layer deposition approach. Since its introduction, 3D printing has aroused enormous interest among researchers and engineers to understand the fabrication process and composition-structure-property correlation of printed 3D objects and unleash its great potential for application in a variety of industrial sectors. Because of its unique technological advantages, 3D printing can definitely benefit the field of microrobotics and advance the design and development of functional microrobots in a customized manner. This review aims to present a generic overview of 3D printing for functional microrobots. The most applicable 3D printing techniques, with a focus on laser-based printing, are introduced for the 3D microfabrication of microrobots. 3D-printable materials for fabricating microrobots are reviewed in detail, including photopolymers, photo-crosslinkable hydrogels, and cell-laden hydrogels. The representative applications of 3D-printed microrobots with rational designs heretofore give evidence of how these printed microrobots are being exploited in the medical, environmental, and other relevant fields. A future outlook on the 3D printing of microrobots is also provided.
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Affiliation(s)
- Jinhua Li
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6, 16628, Czech Republic.
| | - Martin Pumera
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6, 16628, Czech Republic. and Future Energy and Innovation Laboratory, Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, Brno, CZ-61600, Czech Republic and Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic and Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
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17
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Topa-Skwarczyńska M, Galek M, Jankowska M, Morlet-Savary F, Graff B, Lalevée J, Popielarz R, Ortyl J. Development of the first panchromatic BODIPY-based one-component iodonium salts for initiating the photopolymerization processes. Polym Chem 2021. [DOI: 10.1039/d1py01263k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Herein, new iodonium salts based on a 4,4-difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indecene (B-1) chromophore have been introduced to 3D printing applications.
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Affiliation(s)
- Monika Topa-Skwarczyńska
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Mariusz Galek
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
| | - Magdalena Jankowska
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Fabrice Morlet-Savary
- Institut de Science des Matériaux de Mulhouse IS2 M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Bernadette Graff
- Institut de Science des Matériaux de Mulhouse IS2 M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2 M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Roman Popielarz
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Joanna Ortyl
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
- Photo4Chem Ltd., Lea 114, 30-133 Cracow, Poland
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18
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Topa M, Ortyl J. Moving Towards a Finer Way of Light-Cured Resin-Based Restorative Dental Materials: Recent Advances in Photoinitiating Systems Based on Iodonium Salts. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4093. [PMID: 32942676 PMCID: PMC7560344 DOI: 10.3390/ma13184093] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/03/2020] [Accepted: 09/10/2020] [Indexed: 02/06/2023]
Abstract
The photoinduced polymerization of monomers is currently an essential tool in various industries. The photopolymerization process plays an increasingly important role in biomedical applications. It is especially used in the production of dental composites. It also exhibits unique properties, such as a short time of polymerization of composites (up to a few seconds), low energy consumption, and spatial resolution (polymerization only in irradiated areas). This paper describes a short overview of the history and classification of different typical monomers and photoinitiating systems such as bimolecular photoinitiator system containing camphorquinone and aromatic amine, 1-phenyl-1,2-propanedione, phosphine derivatives, germanium derivatives, hexaarylbiimidazole derivatives, silane-based derivatives and thioxanthone derivatives used in the production of dental composites with their limitations and disadvantages. Moreover, this article represents the challenges faced when using the latest inventions in the field of dental materials, with a particular focus on photoinitiating systems based on iodonium salts. The beneficial properties of dental composites cured using initiation systems based on iodonium salts have been demonstrated.
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Affiliation(s)
- Monika Topa
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Joanna Ortyl
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
- Photo HiTech Ltd., Bobrzyńskiego 14, 30-348 Cracow, Poland
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19
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Abstract
The visible light-trigged para-fluoro-thiol ligation is demonstrated for first time by using the photogeneration of a superbase DBU.
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Affiliation(s)
- Johanna Engelke
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane
- Australia
- Centre for Materials Science
| | - Vinh X. Truong
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane
- Australia
- Centre for Materials Science
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